If you are trying to enjoy your life and do good while staying positive, why would you be with people who are negative, pessimistic, and unpleasant?
Stay away from them. Walk out. If they are your family, tell them you don’t want to hear negativity and you will walk away when they are being negative.
Do whatever you have to do, but don’t let others put negative voices into the air around you, because they will penetrate you, or sap your energy resisting them.